| /* |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef CSSCrossfadeValue_h |
| #define CSSCrossfadeValue_h |
| |
| #include "core/CoreExport.h" |
| #include "core/css/CSSImageGeneratorValue.h" |
| #include "core/css/CSSPrimitiveValue.h" |
| #include "core/loader/resource/ImageResourceContent.h" |
| #include "core/loader/resource/ImageResourceObserver.h" |
| #include "platform/graphics/Image.h" |
| |
| namespace blink { |
| |
| class CrossfadeSubimageObserverProxy; |
| class LayoutObject; |
| |
| class CORE_EXPORT CSSCrossfadeValue final : public CSSImageGeneratorValue { |
| friend class CrossfadeSubimageObserverProxy; |
| USING_PRE_FINALIZER(CSSCrossfadeValue, dispose); |
| |
| public: |
| static CSSCrossfadeValue* create(CSSValue* fromValue, |
| CSSValue* toValue, |
| CSSPrimitiveValue* percentageValue) { |
| return new CSSCrossfadeValue(fromValue, toValue, percentageValue); |
| } |
| |
| ~CSSCrossfadeValue(); |
| |
| String customCSSText() const; |
| |
| PassRefPtr<Image> image(const LayoutObject&, const IntSize&); |
| bool isFixedSize() const { return true; } |
| IntSize fixedSize(const LayoutObject&, const FloatSize&); |
| |
| bool isPending() const; |
| bool knownToBeOpaque(const LayoutObject&) const; |
| |
| void loadSubimages(const Document&); |
| |
| bool hasFailedOrCanceledSubresources() const; |
| |
| bool equals(const CSSCrossfadeValue&) const; |
| |
| CSSCrossfadeValue* valueWithURLsMadeAbsolute(); |
| |
| DECLARE_TRACE_AFTER_DISPATCH(); |
| |
| private: |
| CSSCrossfadeValue(CSSValue* fromValue, |
| CSSValue* toValue, |
| CSSPrimitiveValue* percentageValue); |
| |
| void dispose(); |
| |
| class CrossfadeSubimageObserverProxy final : public ImageResourceObserver { |
| DISALLOW_NEW(); |
| |
| public: |
| explicit CrossfadeSubimageObserverProxy(CSSCrossfadeValue* ownerValue) |
| : m_ownerValue(ownerValue), m_ready(false) {} |
| |
| ~CrossfadeSubimageObserverProxy() override {} |
| DEFINE_INLINE_TRACE() { visitor->trace(m_ownerValue); } |
| |
| void imageChanged(ImageResourceContent*, const IntRect* = nullptr) override; |
| bool willRenderImage() override; |
| String debugName() const override { |
| return "CrossfadeSubimageObserverProxy"; |
| } |
| void setReady(bool ready) { m_ready = ready; } |
| |
| private: |
| Member<CSSCrossfadeValue> m_ownerValue; |
| bool m_ready; |
| }; |
| |
| bool willRenderImage() const; |
| void crossfadeChanged(const IntRect&); |
| |
| Member<CSSValue> m_fromValue; |
| Member<CSSValue> m_toValue; |
| Member<CSSPrimitiveValue> m_percentageValue; |
| |
| Member<ImageResourceContent> m_cachedFromImage; |
| Member<ImageResourceContent> m_cachedToImage; |
| |
| CrossfadeSubimageObserverProxy m_crossfadeSubimageObserver; |
| }; |
| |
| DEFINE_CSS_VALUE_TYPE_CASTS(CSSCrossfadeValue, isCrossfadeValue()); |
| |
| } // namespace blink |
| |
| #endif // CSSCrossfadeValue_h |